Okay, I have alluded to it before, but haven't provided much detail. Here is an example of fuzzy text I get doing certain things.
In this case, I create a text box and put some text in it. It looks fine as long as the text box is selected. But when I unselect it, or flatten the text box, the text gets fuzzier and more out of focus looking. This example demonstrates that, but it's not the best example, it's just something that I came across while working on something else and decided to use it to document this problem.
Sometimes the text gets so blurry and fuzzy that it's hard to read (maybe it depends on the font, size, background color and or properties, etc.). You can see what I mean here. In this case the blurriness just kind of makes it look like it's been changed to bold.
So sometimes it's frustrating that it looks fine when I have the box selected, but then it looks horrible when I flatten it.